720 Area Code

Interesting Facts About The 720 Area Code

720 area code

The 720 area code is in the Mountain Time Zone.

The Mountain Time Zone, otherwise known as MST encompasses the America/Denver region.

The 720 area code for Colorado was put into service on June 1 1998.

It was created (and spun off of) from the 303 area code that had become too populated.

The 720 area code is considered an “overlay” of the 303 area code and covers much of the same area.

These 50 cities use the 720 area code in some capacity.

  1. Denver, CO
  2. Aurora, CO
  3. Lakewood, CO
  4. Thornton, CO
  5. Arvada, CO
  6. Westminster, CO
  7. Centennial, CO
  8. Boulder, CO
  9. Highlands Ranch, CO
  10. Longmont, CO
  11. Broomfield, CO
  12. Castle Rock, CO
  13. Commerce City, CO
  14. Parker, CO
  15. Littleton, CO
  16. Northglenn, CO
  17. Brighton, CO
  18. Ken Caryl, CO
  19. Dakota Ridge, CO
  20. Englewood, CO
  21. Wheat Ridge, CO
  22. Lafayette, CO
  23. Columbine, CO
  24. Golden, CO
  25. Louisville, CO
  26. Sherrelwood, CO
  27. Erie, CO
  28. Welby, CO
  29. Greenwood Village, CO
  30. Superior, CO
  31. Federal Heights, CO
  32. Berkley, CO
  33. Cherry Creek, CO
  34. The Pinery, CO
  35. Castle Pines North, CO
  36. Lone Tree, CO
  37. Firestone, CO
  38. Gunbarrel, CO
  39. Roxborough Park, CO
  40. Evergreen, CO
  41. Stonegate, CO
  42. Frederick, CO
  43. Derby, CO
  44. Fairmount, CO
  45. Fort Lupton, CO
  46. Applewood, CO
  47. Twin Lakes, CO
  48. Cherry Hills Village, CO
  49. Sheridan, CO
  50. Dove Valley, CO